X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a8beef7e6a9f6b75fa249d59b4c79585190540b6..ab2a9f579366b0d4940b0ec2d3321d139a7f1f3d:/src/getargs.c?ds=sidebyside

diff --git a/src/getargs.c b/src/getargs.c
index bc1cc64b..e5b016a6 100644
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,7 +1,7 @@
 /* Parse command line arguments for Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -44,20 +44,16 @@
 #include "complain.h"
 #include "files.h"
 #include "getargs.h"
-#include "muscle_tab.h"
+#include "muscle-tab.h"
 #include "uniqstr.h"
 
-bool debug_flag;
 bool defines_flag;
 bool graph_flag;
 bool xml_flag;
-bool locations_flag;
 bool no_lines_flag;
 bool token_table_flag;
 bool yacc_flag;	/* for -y */
 
-bool error_verbose = false;
-
 bool nondeterministic_parser = false;
 bool glr_parser = false;
 
@@ -87,10 +83,12 @@ char *program_name;
  *  \param keys     array of valid subarguments.
  *  \param values   array of corresponding (int) values.
  *  \param flags    the flags to update
- *  \param args     colon separated list of effective subarguments to decode.
+ *  \param args     comma separated list of effective subarguments to decode.
  *                  If 0, then activate all the flags.
  *
- *  The special value 0 resets the flags to 0.
+ *  If VALUE != 0 then KEY sets flags and no-KEY clears them.
+ *  If VALUE == 0 then KEY clears all flags and no-KEY sets all flags.
+ *  Thus no-none = all and no-all = none.
  */
 static void
 flags_argmatch (const char *option,
@@ -102,11 +100,18 @@ flags_argmatch (const char *option,
       args = strtok (args, ",");
       while (args)
 	{
-	  int value = XARGMATCH (option, args, keys, values);
+	  int no = strncmp (args, "no-", 3) == 0 ? 3 : 0;
+	  int value = XARGMATCH (option, args + no, keys, values);
 	  if (value == 0)
-	    *flags = 0;
+	    if (no)
+	      *flags = ~0;
+	    else
+	      *flags = 0;
 	  else
-	    *flags |= value;
+	    if (no)
+	      *flags &= ~value;
+	    else
+	      *flags |= value;
 	  args = strtok (NULL, ",");
 	}
     }
@@ -181,6 +186,7 @@ static const char * const trace_args[] =
   "m4         - m4 traces",
   "skeleton   - skeleton postprocessing",
   "time       - time consumption",
+  "ielr       - IELR conversion",
   "all        - all of the above",
   0
 };
@@ -200,6 +206,7 @@ static const int trace_types[] =
   trace_m4,
   trace_skeleton,
   trace_time,
+  trace_ielr,
   trace_all
 };
 
@@ -216,7 +223,7 @@ static const char * const warnings_args[] =
      that argmatch_valid be more readable.  */
   "none            - no warnings",
   "midrule-values  - unset or unused midrule values",
-  "yacc            - incompatibilities with POSIX YACC",
+  "yacc            - incompatibilities with POSIX Yacc",
   "all             - all of the above",
   "error           - warnings are errors",
   0
@@ -248,9 +255,15 @@ usage (int status)
 	     program_name);
   else
     {
+      /* For ../build-aux/cross-options.pl to work, use the format:
+		^  -S, --long[=ARGS] (whitespace)
+	 A --long option is required.
+	 Otherwise, add exceptions to ../build-aux/cross-options.pl.  */
+
       printf (_("Usage: %s [OPTION]... FILE\n"), program_name);
       fputs (_("\
-Generate LALR(1) and GLR parsers.\n\
+Generate a deterministic or GLR parser employing LALR(1), IELR(1), or\n\
+canonical LR(1) parser tables.\n\
 \n\
 "), stdout);
 
@@ -278,7 +291,8 @@ Parser:\n\
   -L, --language=LANGUAGE    specify the output programming language\n\
                              (this is an experimental feature)\n\
   -S, --skeleton=FILE        specify the skeleton to use\n\
-  -t, --debug                instrument the parser for debugging\n\
+  -t, --debug                instrument the parser for tracing\n\
+                             same as `-Dparse.trace'\n\
       --locations            enable location support\n\
   -D, --define=NAME[=VALUE]  same as `%define NAME \"VALUE\"'\n\
   -p, --name-prefix=PREFIX   prepend PREFIX to the external symbols\n\
@@ -307,7 +321,7 @@ Output:\n\
       fputs (_("\
 Warning categories include:\n\
   `midrule-values'  unset or unused midrule values\n\
-  `yacc'            incompatibilities with POSIX YACC\n\
+  `yacc'            incompatibilities with POSIX Yacc\n\
   `all'             all the warnings\n\
   `no-CATEGORY'     turn off warnings in CATEGORY\n\
   `none'            turn off all the warnings\n\
@@ -529,14 +543,10 @@ getargs (int argc, char *argv[])
         {
           char* name = optarg;
           char* value = strchr (optarg, '=');
-          char const * muscle_value = "";
           if (value)
-            {
-              *value++ = 0;
-              muscle_value = value;
-            }
+            *value++ = 0;
           muscle_percent_define_insert (name, command_line_location (),
-                                        muscle_value);
+                                        value ? value : "");
         }
 	break;
 
@@ -610,7 +620,8 @@ getargs (int argc, char *argv[])
 	break;
 
       case 't':
-	debug_flag = true;
+        muscle_percent_define_insert ("parse.trace",
+                                      command_line_location (), "");
 	break;
 
       case 'v':
@@ -628,7 +639,8 @@ getargs (int argc, char *argv[])
 	break;
 
       case LOCATIONS_OPTION:
-	locations_flag = true;
+        muscle_percent_define_ensure ("locations",
+                                      command_line_location (), true);
 	break;
 
       case PRINT_LOCALEDIR_OPTION:
@@ -659,3 +671,11 @@ getargs (int argc, char *argv[])
   current_file = grammar_file = uniqstr_new (argv[optind]);
   MUSCLE_INSERT_C_STRING ("file_name", grammar_file);
 }
+
+void
+tr (char *s, char from, char to)
+{
+  for (; *s; s++)
+    if (*s == from)
+      *s = to;
+}